Process of the manufacture of lubricating-oils and the like.



APPLICATION FiLED JULY 9. 1914.

Patented Dec. 28, 1915.

wi/h woo rmrrn eras PATENT orrica.

JEAN ROSEN', OF PARIS, FRANCE, ASSIGNOR T0 SOCIETE ANONYME DESCOMBUSTIBLES INDUSTRIELS, 0F PARIS, FRANCE.

PROCESS OF THE MANUFACTURE OF LUBRICATING-OILS AND THE LIKE.

Specification of Letters Patent.

Patented Dec. 28, 11915.

Application filed July 9, 1914. Serial No. 850,027.

To all whom it may concern:

Be it knownthat I, JEAN RosEN, a citizen of France, residing at 25 RuePigalle, Paris, France, have invented certain new and usefulImprovements in Processes of Manufacture of Lubricating-Oils and thelike, of which the following is a specification.

This invention relates to a process for the manufacture of lubricatingoils, cylinder oils and the like, which prevents the decomposition ofthe raw material at a high temperature during the distillation of thismaterial. The raw material used for the manufacture of said oils, forinstance, petroleum residues or petroleum tar (the remainder afterkerosene is driven off petroleum) is first distilled in a known mannerand carrier air or steam for example is introduced into the rawmaterial, whereupon the carrier is replaced by a product ofdecomposition 71. 6. solar or cracked oil, the formation of which is tobe avoided, said product being preferably supplied in a cold liquidcondition.

When distilling petroleum residues or petroleum tar for instance themean boiling point of which is high, products of decomposition areusually obtained which distil, at about 280 C. and are termed solar orcracked oils (hm'les solaz'res). When the petroleum residues or tarsattain during distillation a temperature of about 320 (3., solar oilwhich distils at 280 is introduced into mass to be distilled ispreferably divided for i this purpose into several parts thatcommunicate with each other by suitable partition walls provided in thestill and the carrier is introduced into one of these parts.

Reference is now to be had to the accompanying drawing showing adiagrammatic view*of apparatus which may be used in carrying out theprocess.

I employ a reservoir 1 having two compartments 2 and 3 divided by apartition 4: which permits communication between the compartments bothat the top and bottom of the partition. An inlet or supply pipe 5connects with the bottom of the reservoir below one compartment and anoutlet pipe 6 for distillate leads from the top of the reservolr. Cutoff valves 7 and 8are provided in the pipes 5 and 6. A heating coil orpipe 9 through which a heating medium like steam passes, may be used toboil the raw material. The petroleum residue or tar (the materialremaining after driving off kerosene from petroleum) is introduced intothe reservoir 1 through an opening normally closed by a cap 10 andtherein heated to a temperature of about 320 C. With valve 7 open,v

solar or cracked oils are supplied through pipe 5 into one of thecompartments, for instance 2, at a temperature of about 280. The solaror cracked oil decomposes and serves as a carrier for the distillatefrom the reservoir, which passes therefrom through the pipe 6. Whilethis action takes place in compartment 2, the residue or tar incompartment 3 is necessarily drawn .into compartment 2 so that the solaror cracked oil cooperates therewith as well as with the material incompartment 2.

What I claim is:

1. The process of distillation consisting in heating the raw material tobe distilled, such as petroleum residue, to a temperature of about 320(1., andthen introducing thereinto a liquid carrier consisting of solaror cracked oil at a temperature lower than the temperature of thematerial at the moment of introduction to be vaporized by the materialand serve as a carrier for the distillate therefrom.

2. The process for the manufacture of lubricating oils, cylinder oilsand the like consisting of heating petroleum residue to a temperature ofabout 320 (1, and then introducing thereinto a liquid carrier at atemperature lower than the material being dis tilled at the moment ofintroduction, such carrier consisting of the products of decompositionusually obtained When distilling said raw material, said raw materialbeing contained in a plurality of communicating compartments and thecarrier liquid being supplied to one of the compartments only to bevapori zed by the petroleum residue and 'In testimony whereof I aflix mysignature.

JEAN ROSEN.

\Vitness CHAS. P. PRESSLEY.

